Clock for magic lanterns



(Model.)

I. A. JAE KEL.

GLOUK FOR MAGIC LANTERNS.

Patented Oct. 4,1881.

INVENTOR v WITNESSES:

XMV BY 4% ATTORNEYS.

UNITED STATES PATENT OFFICE.

FERDINAND A. JAEKEL, OF CINCINNATI, OHIO.

CLOCK FOR MAGIC LANTERNS.

SPECIFICATION forming part of Letters Patent No. 247,918, dated October 4, 1881.

Application filed June 8, 1881 (ModeL) To all whom it may concern:

Be it known that I, FERDINAND A. J AEKEL, of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Clocks, of which the following is a full, clear, and exact specification.

The object of my invention is the production of a clock the dial and hands of which may be projected upon a canvas or similar surface, like the pictures of a magic lantern, so as to be plainly visible at night.

Myinvention consists, principally, ofa transparent dial placed in front of a light-ch amber or lantern, in combination with means whereby the hands of the clock are caused to move over the dial.

In the accompanying drawings, Figure l is a front elevation of my invention. Fig. 2 is a central vertical section. Fig. 3 is an elevation of one of the hand-wheels removed. Fig. 4 is a section ofthe same when formed of two plates of glass.

Similar letters of reference indicate corrcspending parts.

The clock-m ovement may be of any approved construction, and it is preferably secured upon formed around the inner edges of the metal rings b b. Upon the glass disks 0 is painted the minute-hand c, and upon the disk 0 is painted the hour-hand c. The outer edges of the annular rings b b are formed with cogs, which mesh with the large cog-wheels d (1, secured upon the hanrl-arbors of the clock-movement, from which they receive and impart the proper relative motion to the wheels carrying the hands.

In order that the dial and thedisksc 0 may be cleaned without disturbing the paint or other material with which the figures and hands are placed upon the glass,I propose to make them of double plates, as shown in Fig. 4, cemented or otherwise secured together, the painting being placed upon one of the inner surfaces.

By this construction and arrangement all the advantages of an illuminated clock are obtained at a comparatively small cost.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The combination of the chamber A, having a glass dial, B, the stud a in the center of said dial, and carrying the hand wheels or disks 0 0, made of glass, and the metallic cogged rings 12 b, meshing with cog-wheels on the hand-arbors of the clock-movement, for the purpose specified.

FERDINAND AUGUST JAEKEL,

I Witnesses:

ANDREW JOHN GEHRUM, EMIL Rona. 

